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Finding the Fourth Proportional to 435.80, 653.93 and 161.94

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Solution

The fourth proportional to 435.80, 653.93 and 161.94 is: 243.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.80 : 653.93 = 161.94 : x
  2. Step 2: Convert to fraction form
    435.80/653.93 = 161.94/x
  3. Step 3: Cross multiply
    435.80x = 653.93 × 161.94
  4. Step 4: Simplify right side
    435.80x = 105,897.83
  5. Step 5: Solve for x
    x = 105,897.83/435.80
  6. Step 6: Final answer
    x = 243.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.